Saints were the first club to reach such a decision, which meant the club did not have to place their non-playing staff on furlough leave.
Speaking to the Daily Echo, Armstrong said: "It was a collective decision within the group that involved the players, the staff and the club.
"It was something we all felt we wanted to do and we made the decision together to ultimately help the club which will then help the community.
"It was a great decision and it's great we've been able to help.
"Having that open communication where everyone has the right to express how they feel is important.
"But everyone was on the same page and we all wanted to help the club, the community and the supporters.
"We are all very much pleased and happy to be part of that decision making."
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